Sig Sauer SIG556xi .300 BLKOUT SEMI
Lowest Listed Price
$1,499
MSRP
$0
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Updated
Aug 26, 2026
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Specifications
Brand
MPN
R556XI-300B-16B-C
Description
The Sig Sauer SIG556xi .300 Blackout rifle is a combination of the AR, AK, and the Swiss 550 Series. The Sig556xi has a three-position adjustable gas piston system, offers ambidextrous controls, the serialized upper allows the changing of lowers, and accepts multiple calibers and magazine types. Sig Sauer SIG556xi .300 BLKOUT SEMI
